content: package alien4cloud.component.repository;
  
  import java.util.Map;
  
  import alien4cloud.repository.model.ValidationResult;
  
  /**
   * An artifact resolver determines if an artifact can be resolved for validation purpose, it can also download the artifact then return back to Alien for the
   * deployment of the topology
   */
  public interface IArtifactResolver {
  
      /**
       * The type of the resolver, this is useful to distinguish different types of resolver for example git, http, maven, make sure to not having multiple
       * resolver plugins with the same resolver type
       * 
       * @return the type of the resolver
       */
      String getResolverType();
  
      /**
       * Check if the resolver can handle the particular artifact
       * 
       * @param artifactReference reference of the artifact
       * @param repositoryURL url of the repository
       * @param repositoryType type of the repository, it corresponds to the resolver type, normally the plugin will resolve artifact only of type defined in
       *            getResolverType
       * @param credentials the credentials to connect to the repository
       * @return the validation result
       */
      ValidationResult canHandleArtifact(String artifactReference, String repositoryURL, String repositoryType, Map<String, Object> credentials);
  
      /**
       * Resolve an artifact, try to download the artifact if possible and return the path to the downloaded artifact
       *
       * @param artifactReference reference of the artifact
       * @param repositoryURL url of the repository
       * @param repositoryType type of the repository, it corresponds to the resolver type, normally the plugin will resolve artifact only of type defined in
       *            getResolverType
       * @param credentials the credentials to connect to the repository
       * @return the path to the downloaded artifact
       */
      String resolveArtifact(String artifactReference, String repositoryURL, String repositoryType, Map<String, Object> credentials);
  }
  